Gutenberg Open Science: Control of the Walker breakdown by periodical magnetic wire-width modulation

Please use this identifier to cite or link to this item: http://doi.org/10.25358/openscience-7469

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DC Field	Value	Language
dc.contributor.author	Lozhkina, Olga	-
dc.contributor.author	Reeve, Robert M.	-
dc.contributor.author	Frömter, Robert	-
dc.contributor.author	Kläui, Mathias	-
dc.date.accessioned	2022-08-10T08:58:31Z	-
dc.date.available	2022-08-10T08:58:31Z	-
dc.date.issued	2022	-
dc.identifier.uri	https://openscience.ub.uni-mainz.de/handle/20.500.12030/7483	-
dc.description.abstract	Suppression of the Walker breakdown in confined wires is key to improving the operation and reliability of magnetic domain-wall-based devices, including logic, memory, and sensor applications. Here, via micromagnetic simulations, we demonstrate that periodical wire-width modulation with suitable geometric parameters can fully suppress the Walker breakdown of a field-driven domain wall, conserving its spin structure in the whole operating field range of a device. Key differences in the efficacy of the wire-width modulation are observed for wires with different widths and thicknesses such that different domain wall states are energetically stable. In particular, the approach is found to be effective in expanding the field-operating window of a device in the case of smaller wire widths and thicknesses (below 150 nm wide and 15 nm thick), whereas in larger wires, the advantages from the suppression in the Walker breakdown are counteracted by the increase in domain wall pinning and the reduction in the nucleation field for new domain walls. Simulations on intersecting magnetic wires prove the importance of suppression of the Walker breakdown. Since the domain wall behavior is chirality dependent, introducing periodical wire-width modulation conserves the spin structure, thus reducing stochasticity of the domain wall propagation.	en_GB
dc.language.iso	eng	de
dc.rights	InCopyright	*
dc.rights.uri	http://rightsstatements.org/vocab/InC/1.0/	*
dc.subject.ddc	530 Physik	de_DE
dc.subject.ddc	530 Physics	en_GB
dc.title	Control of the Walker breakdown by periodical magnetic wire-width modulation	en_GB
dc.type	Zeitschriftenaufsatz	de
dc.identifier.doi	http://doi.org/10.25358/openscience-7469	-
jgu.type.contenttype	Scientific article	de
jgu.type.dinitype	article	en_GB
jgu.type.version	Accepted version	de
jgu.type.resource	Text	de
jgu.organisation.department	FB 08 Physik, Mathematik u. Informatik	de
jgu.organisation.number	7940	-
jgu.organisation.name	Johannes Gutenberg-Universität Mainz	-
jgu.rights.accessrights	openAccess	-
jgu.journal.title	Journal of applied physics	de
jgu.journal.volume	131	de
jgu.journal.issue	23	de
jgu.pages.alternative	233902	de
jgu.publisher.year	2022	-
jgu.publisher.name	American Inst. of Physics	de
jgu.publisher.place	Melville, NY	de
jgu.publisher.issn	0021-8979	de
jgu.organisation.place	Mainz	-
jgu.subject.ddccode	530	de
jgu.publisher.doi	10.1063/5.0092222	de
jgu.organisation.ror	https://ror.org/023b0x485	-
Appears in collections:	JGU-Publikationen

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